Scenario Complications: Religious festivals

I've just finished re-reading the first Shira Calpurnia novel and the way the large religious festival featured in the book played merry hell with her Arbites investigation had me thinking. Wouldn't it be a great theme for a game of Inquisitor (and all it's variant flavours...), Necromunda or any other skirmish set in the 40K Universe to have the edicts of a local religious festival interfere with the actions of your warbands?

So I thought up some possible (Imperium) religious observances and the effect they could have on a game:

Scenario Servitor online ... +++Processing+++

So, time to try something new...
Every now and then I get some idea for a scenario that won't let me go. As I may have mentioned before I don't get to game often, either because the few people I game with don't often have time to meet up, or I can't find someone to share/get my particular gaming interest. So the idea stays unused, maybe gets noted down somewhere, and then is forgotten.
Which I think is a shame. So from now on, when I have such an idea, I'll try to note it down properly and post it here. That way, the idea gets retained in a way that I can retrieve them more easily. And maybe someone else may get a use out of them too?
I'll put them under the "Scenario Servitor" label to make them easier to find.
So, let's fire this thing up, shall we?

+Scenario Servitor A5P4R4GU-5 Theta activated...+
+Processing request+

+<Verbalise: "Which file do you wish to retrieve, my lord?"+
+Awaiting response+
...